<template>
  <div class="app-container">
    <!--顶部Header区域-->
    <mt-header fixed title="黑马程序员.Vue"
      ><span slot="left" @click="goback" v-show="flag">
        <mt-button icon="back">返回</mt-button>
      </span></mt-header
    >
    <!-- 中间路由 router-view区域-->
    <transition>
      <router-view></router-view>
    </transition>
    <!--底部Tabbar区域-->
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item-llb" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item-llb" to="/member">
        <span class="mui-icon mui-icon-contact"></span>
        <span class="mui-tab-label">会员</span>
      </router-link>
      <router-link class="mui-tab-item-llb" to="/shopcar">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart"
          ><span class="mui-badge" id="mui-badge">{{
            $store.getters.getAllCount
          }}</span></span
        >
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item-llb" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
    </nav>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        flag: false,
      }
    },
    created() {
      this.flag = this.$route.path === '/home' ? false : true
    },
    methods: {
      goback() {
        this.$router.go(-1)
      },
    },
    watch: {
      '$route.path': function (newVal) {
        if (newVal === '/home') {
          this.flag = false
        } else {
          this.flag = true
        }
      },
    },
    beforeCreate() {
      document.querySelector('body').setAttribute('style', 'background:#fff')
    }, //
    beforeDestroy() {
      document.querySelector('body').removeAttribute('style')
    },
  }
</script>

<style lang="less" scoped>
  body {
    .mint-header.is-fixed {
      z-index: 99;
    }
    .app-container {
      padding-top: 40px;
      padding-bottom: 50px;
      overflow-x: hidden;
    }
    .v-enter {
      opacity: 0;
      transform: translateX(100%);
    }
    .v-leave-to {
      opacity: 0;
      transform: translateX(-100%);
      position: absolute;
    }
    .v-enter-active,
    .v-leave-active {
      transition: all 0.5s ease;
    }
    /*改类名解决tabar没反应的问题*/
    .mui-bar-tab .mui-tab-item-llb.mui-active {
      color: #007aff;
    }
    .mui-bar-tab .mui-tab-item-llb {
      display: table-cell;
      overflow: hidden;
      width: 1%;
      height: 50px;
      text-align: center;
      vertical-align: middle;
      white-space: nowrap;
      text-overflow: ellipsis;
      color: #929292;
    }
    .mui-bar-tab .mui-tab-item-llb .mui-icon {
      top: 3px;
      width: 24px;
      height: 24px;
      padding-top: 0;
      padding-bottom: 0;
    }
    .mui-bar-tab .mui-tab-item-llb .mui-icon ~ .mui-tab-label {
      font-size: 11px;
      display: block;
      overflow: hidden;
      text-overflow: ellipsis;
    }
  }
</style>
